springboot 异步执行

一般项目中会有很多需要异步执行的工作，比如发消息等

项目启动类添加@EnableAsync 注解，如

@SpringBootApplication(scanBasePackages = {"扫描的包"})
@EnableAsync
@EnableRetry 
public class ZmallApplication extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(ZmallApplication.class);
    }

    public static void main(String[] args) {
        SpringApplication.run(ZmallApplication.class, args);
    }
｝

发送消息

 1 @Service
 2 @EnableScheduling
 3 public class AppointmentServiceImpl implements AppointmentService{
 4     private Logger logger = LoggerFactory.getLogger(AppointmentServiceImpl.class);
 5     private ConcurrentLinkedQueue<AppointmentDto> appointQueue = new ConcurrentLinkedQueue<>();
 6     
 7     @Autowired
 8     private AppointmentRepository appointmentRepository;
 9     
10     @Autowired
11     private ApplicationContext applicationContext;
12     
13     public ServiceResult addAppointmen(String mobile,String type) {
14         AppointmentDto a = new AppointmentDto();
15         a.setMobile(mobile);
16         a.setAppointmentType(type);
17         a.setZestUid(CookieUtils.getUserId());
18         appointQueue.offer(a);
19         return ServiceResultFactory.getServiceResult(ResultMessage.Code.SUCCESS, "预约成功", null,0);
20     }
21 
22     public void remindUser(String type) {
23         List<AppointmentDto> appoints = appointmentRepository.getNeedRemindUser(type);
24         logger.info("预约提醒开始执行,本次需提醒:{}",appoints.size());
25         if(appoints.size()>0){
26             AppointmentEvent evt = new AppointmentEvent();
27             evt.setAppointments(appoints);
28             applicationContext.publishEvent(evt);
29         }
30     }
31     
32     void asyncSaveAppointmenToDB(){
33         List<AppointmentDto> mobiles = new ArrayList<>();
34         AppointmentDto a = null;
35         int count = 0;
36         while ((a = appointQueue.poll()) != null) {
37             mobiles.add(a);
38             count++;
39             if (count >= 5) {
40                 appointmentRepository.addAppointmen(mobiles);
41                 count = 0;
42             }
43         }
44         if (count > 0) {
45             appointmentRepository.addAppointmen(mobiles);
46             count = 0;
47         }
48     }
49     
50     @Scheduled(cron = "0/20 * * * * ?") 
51     public void saveAppointmenTask() throws Exception {
52         logger.info("用户预约执行");
53         asyncSaveAppointmenToDB();
54     }
55 
56     public ServiceResult addAppointmen(AppointmentDto appointProduct) {
57         logger.info("优惠促销提醒的折扣商品是:{}",appointProduct);
58         appointQueue.offer(appointProduct);
59         return ServiceResultFactory.getServiceResult(ResultMessage.Code.SUCCESS, "预约成功", null,0);
60     }
61 }

异步事件监听,可以有多个，主要根据参数类型来区分

@Async
@Component
public class HandleAsyncEventListener {
。。。
    @EventListener
    public void handleRemindUserEvent(AppointmentEvent evt) {
        List<AppointmentDto> appointments = evt.getAppointments();
        long start = System.currentTimeMillis();
        logger.info("预约提醒发短信开始执行");
        String smsTemplate = smsRepository
                .getSmsTemplateByCode(CommonParams.APPOINTMENT_REMIND_SMS_TEMP);
        for (AppointmentDto dto : appointments) {
            logger.info("预约提醒发短信,手机号:{}", dto.getMobile());
            smsService.asyncSendSms(smsTemplate, dto.getAppointmentType(), dto.getMobile());
            logger.info("预约提醒发短信,手机号:{}", dto.getMobile());
        }
        long end = System.currentTimeMillis();
        logger.info("预约提醒发短信结束,本次调用共耗时:{}", (end - start));
        int cnt = appointmentRepository.updateAppointmenState(appointments);
        logger.info("数据量:{}", cnt);
    }
}

 

posted on 2017-11-23 17:51  xhshic  阅读(195)  评论(0)    收藏  举报

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